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4t65e-hd question by Detainabull
Started on: 07-06-2016 08:41 PM
Replies: 3 (111 views)
Last post by: Detainabull on 07-07-2016 08:14 PM
Detainabull
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Report this Post07-06-2016 08:41 PM Click Here to See the Profile for DetainabullClick Here to Email DetainabullSend a Private Message to DetainabullEdit/Delete MessageReply w/QuoteDirect Link to This Post
Quick question for you automatic guys. I have the chance to score a donor car. A 98 Buick regal GS. 3800 series 2 supercharged with the HD trans. The engine will be used for my Fiero swap but my question is will the HD trans work for an 05 Monte Carlo with a standard 4t65e transmission. That car has a blown transmission and was wondering the possibility of using that transmission on the Monte. Thanks for your help
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TXGOOD
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Report this Post07-06-2016 10:37 PM Click Here to See the Profile for TXGOODClick Here to visit TXGOOD's HomePageSend a Private Message to TXGOODEdit/Delete MessageReply w/QuoteDirect Link to This Post
The 05 will have different wiring than the 98.
I think the gear selection switch is internal in trannys over 2003
The only thing that is HD on an HD is the differential.
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Dennis LaGrua
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Report this Post07-07-2016 02:54 PM Click Here to See the Profile for Dennis LaGruaClick Here to Email Dennis LaGruaSend a Private Message to Dennis LaGruaEdit/Delete MessageReply w/QuoteDirect Link to This Post
The GM 4T65eHD design was changed by GM in 2003. The electronic signals that shift the later transmissions (03-up) are different and the 95-02 PCM's cannot shift them. . The 2003 PCM can be used to control your powertrain combination. It is the only GTP PCM that can control a cable operated TB 3800SC and shift the later transmission. Your harness must be based on the 2003 Grand Prix 3800 engine. AShould you not want to build that harness yourself; a number of forum members here can build that harness for you.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

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Detainabull
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Report this Post07-07-2016 08:14 PM Click Here to See the Profile for DetainabullClick Here to Email DetainabullSend a Private Message to DetainabullEdit/Delete MessageReply w/QuoteDirect Link to This Post
Ahh gotcha...not just a simple swap I see. Well if anything it'll still be a good candidate to complete my 3800sc swap. Thanks for the help
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